EP3885093A1 - Procédé de fabrication d'un mélange maître plastique antimicrobien en utilisant des granulés de macsumsuk - Google Patents

Procédé de fabrication d'un mélange maître plastique antimicrobien en utilisant des granulés de macsumsuk Download PDF

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Publication number
EP3885093A1
EP3885093A1 EP19900989.5A EP19900989A EP3885093A1 EP 3885093 A1 EP3885093 A1 EP 3885093A1 EP 19900989 A EP19900989 A EP 19900989A EP 3885093 A1 EP3885093 A1 EP 3885093A1
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Prior art keywords
macsumsuk
powders
manufacturing
plastic
antibacterial
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EP19900989.5A
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German (de)
English (en)
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EP3885093A4 (fr
Inventor
Sung Gun Kwak
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Macsumsuk Gm Co Ltd
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Macsumsuk Gm Co Ltd
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Publication of EP3885093A1 publication Critical patent/EP3885093A1/fr
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Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/10—Making granules by moulding the material, i.e. treating it in the molten state
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/82—Heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/80—Component parts, details or accessories; Auxiliary operations
    • B29B7/88—Adding charges, i.e. additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B9/00—Making granules
    • B29B9/12—Making granules characterised by structure or composition
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/12—Powdering or granulating
    • C08J3/122—Pulverisation by spraying
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/203—Solid polymers with solid and/or liquid additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/346—Clay
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2300/00—Characterised by the use of unspecified polymers
    • C08J2300/22—Thermoplastic resins
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/08—Metals
    • C08K2003/0806—Silver
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/011—Nanostructured additives
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
    • C08K3/015—Biocides

Definitions

  • the present invention relates to a method of manufacturing a masterbatch to be used for manufacturing a plastic product and relates to a method of manufacturing a Macsumsuk powder antibacterial plastic masterbatch in which when a pellet is melted, porous plastic powders including an antibacterial substance and using Macsumsuk as a raw material is added to exhibit an excellent antibacterial effect.
  • Antimicrobial plastics are known to play a role in antiseptic and antimicrobial activities, anti-fungal ability, anti-corrosion, freshness maintenance, odor removal, etc. as antimicrobial substances are contained in the plastics.
  • Patent Literature 1 Korean Patent Registration No. 10-1334283 , Patent Literature 1 discloses a technique related to a plastic material including an uncoated zinc oxide of a powder type consisting of secondary particles in which the primary particles are aggregated.
  • the zinc oxide Since the zinc oxide has an excellent level of resistance to poisons or bacteria, it acts on special enzymes that have oxygen and digestive metabolism, making it possible to neutralize single-celled animals such as bacteria, viruses, and fungi. Therefore, it is known to catalyze the suffocation or the starvation of bacteria.
  • the zinc oxide is a product that has been widely used due to its excellent UV-blocking effect. However, it is difficult to exert a lasting effect and there is a problem of inhibiting the properties of plastic.
  • Patent Literature 1 Korean Patent Registration No. 10-01334283 (November 22, 2013 )
  • the method of manufacturing a Macsumsuk powder antibacterial plastic masterbatch of the present invention is conceived to overcome the problem generated in the related art and to provide a manufacturing method for exhibiting an excellent antibacterial effect when being used as a masterbatch.
  • powders in which empty spaces are formed inside thereof is formed by using Macsumsuk, and powders are extruded while the empty spaces of the powders are filled with a plastic raw material, so that a bond between masterbatches in a plastic product molding process is smooth, and Macsumsuk powders and the plastic raw material are not easily separated, thereby preventing the deterioration of physical properties of the plastic product.
  • silver nanoparticles which is an antibacterial substance
  • a powder molding process the powders are firmly integrated in the process of sintering the powders, and a phenomenon of the powders being biased to one place by specific gravity or centrifugal force in a melting treatment process for manufacturing a plastic product is prevented, so that the antibacterial effect is exhibited evenly on the entire product.
  • Far-infrared rays and antibacterial components generated from the Macsumsuk powders on the surface or the contents of a molded plastic product suppress various bacteria and mold, maintain freshness for a long period of time, and prevent deterioration of physical properties of the plastic product.
  • an antibacterial plastic masterbatch including:
  • the method of manufacturing an antibacterial plastic masterbatch further includes a firing step of firing the Macsumsuk powders after the powder molding step to have a shape in which empty spaces are formed inside thereof and pores are formed on surfaces; wherein the empty spaces inside the Macsumsuk powders are filled with a plastic resin raw material melted in the extruding step upon pulverization.
  • the Macsumsuk pulverized product is obtained by firing Macsumsuk ore at a high temperature and performing wet pulverization.
  • Macsumsuk powders in the second mixing step are mixed to be included by 2 to 70 weight% with respect to 100 weight% of the pellet mixture.
  • the antibacterial substance is silver nanoparticles.
  • the prepared powders are pulverized, and the pulverized product is mixed with the plastic raw material.
  • the Macsumsuk powders by mixing the Macsumsuk powders with self-antimicrobial properties to a plastic raw material in a pellet form at a certain ratio to form a masterbatch, it can be practically useful in real life due to the antimicrobial and sterilizing functions generated on the surface and material of the plastic products.
  • the freshness of the package can be increased to contribute to the promotion of national health.
  • powders in which empty spaces are formed inside thereof is formed by using Macsumsuk, and powders are extruded while the empty spaces of the powders are filled with a plastic raw material, so that a bond between masterbatches in a plastic product molding process is smooth, and Macsumsuk powders and the plastic raw material are not easily separated, thereby preventing the deterioration of physical properties of the plastic product.
  • silver nanoparticles which is an antibacterial substance
  • a powder molding process the powders are firmly integrated in the process of sintering the powders, and a phenomenon of the powders being biased to one place by specific gravity or centrifugal force in a melting treatment process for manufacturing a plastic product is prevented, so that the antibacterial effect is exhibited evenly on the entire product.
  • Far-infrared rays and antibacterial components generated from the Macsumsuk powders on the surface or the contents of a molded plastic product suppress various bacteria and mold, maintain freshness for a long period of time, and prevent deterioration of physical properties of the plastic product.
  • a Macsumsuk pulverized product and water are mixed in a certain ratio to obtain a slurry.
  • the Macsumsuk pulverized product may be used by pulverizing ore, but it is preferable to use a product pulverized after sintering, if possible.
  • FIG. 1 shows a micrograph of Macsumsuk powders of 0.1 to 100 ⁇ m.
  • Macsumsuk is a rock belonging to quartz porphyry in igneous rocks and is easily weathered and broken as a whole.
  • white feldspar is often kaolinized in many cases, and biotite is mostly oxidized and scattered in the form of iron oxide.
  • Macsumsuk contains a large amount of amphibole, and includes a large amount of magnesium oxide (MgO) so ⁇ rays exist. It is known that Macsumsuk has a good effect on living organisms.
  • MgO magnesium oxide
  • the wavelength generated from Macsumsuk is within the range of 8 to 14 ⁇ m, which is known as the far-infrared rays of the wavelength band that is most beneficial on living bodies. It is known that the far-infrared rays in this wavelength band activate biological cells to promote metabolism.
  • Macsumsuk is pulverized, particularly pulverized after calcination, and manufactured in a powder form, so that Macsumsuk is used as a carrier in which a molten plastic raw material is accommodated.
  • the plastic raw material and mineral components of Macsumsuk form a solid bond therein, the deterioration of physical properties such as the strength of the plastic injection product is suppressed, and the deterioration of the appearance can be prevented.
  • Macsumsuk shows functions such as adsorption by porosity, precipitation of minerals, control of the water quality, and increase of dissolved oxygen amount in water.
  • Macsumsuk reacts with oxygen to have O 2 and OH (hydroxyl group) in a very high oxidation form, and thus has very strong oxidation and reduction properties. Therefore, Macsumsuk penetrates cell membranes of bacteria, degenerates proteins of the cell membranes to destroy the bacterial cells, and has an effect of killing bacteria.
  • the emissivity of the far-infrared rays of Macsumsuk is shown in FIG. 2
  • the spectral radiance thereof is shown in FIG. 3 .
  • the unit of the emissivity is W/m 2 ⁇ m based on the measurement at 180°C, and it can be confirmed that it shows a high far-infrared emissivity similar to that of a black body.
  • the graphs of FIGS. 2 and 3 are the results measured by Korea Far Infrared Association Co.
  • the sintered and pulverized product of Macsumsuk ore is obtained by first introducing Macsumsuk raw materials into a furnace and adjusting the temperature and the pressure to reach 1,200°C.
  • the temperature is maintained at 1,200°C for one hour, so that chemical components of Macsumsuk form a recrystallization bond, that is, a covalent bond.
  • the temperature is gradually lowered to extinguish, and then reaches 800°C in five hours.
  • the furnace is completely opened so that the temperature is cooled by 100°C per hour. Then, the obtained sintered body is pulverized into particles of 0.1 to 100 ⁇ m by using a wet pulverizer.
  • the mixing ratio of the Macsumsuk pulverized product and water is preferably 2:1 in a weight ratio.
  • An antibacterial substance and a foaming agent are added to the slurry and further mixed to obtain a granulated mixture.
  • silver nanoparticles are preferably used.
  • Corn powder may be further mixed in the manufacturing.
  • starch of potatoes, sweet potatoes, or com is mixed to be used in a film for agriculture and fruit tree sapling, starch is degenerated by natural microorganisms, and the far-infrared function of Macsumsuk is converted to the function of compost, so that the crops may grow healthy.
  • foaming agent a mixture of calcium carbonate and sodium carbonate is preferably used.
  • the foaming agent generates carbon dioxide by thermal degeneration when firing, carbon dioxide generated inside the powders forms pores inside the powders. Then, gas is released to a portion between powder particles to increase porosity, and plastic raw materials penetrate inside to improve physical properties during plastic injection molding.
  • carbon dioxide formed on the surface of the powders increases the surface area of the powders, so that a bond with plastic raw materials outside the powders is smoothly formed to improve physical properties.
  • the use amount of the foaming agent is preferably 1 to 10 parts by weight based on 100 parts by weight of the slurry.
  • the use amount of the antibacterial substance is 0.001 to 0.1 parts by weight based on 100 parts by weight of the slurry.
  • the granulation mixture is molded into a granular shape having an average particle size within the range of 0.1 to 100 ⁇ m by using a granulator to obtain Macsumsuk powders.
  • an air heating furnace burner of the granulator is ignited to raise the temperature, so that the internal temperature of the furnace reaches 1,000°C.
  • a blower is operated to move heat inside a cyclone.
  • a nozzle is put in the lower portion of the cyclone, and the finely pulverized granulation mixture is pumped up at a pump pressure of 40 kgf/cm 2 to the upper point where the weight flows.
  • the manufactured Macsumsuk powders have a shape close to a sphere as shown in FIG. 4 , and pulverized powder size is about 0.1 to 10 ⁇ m.
  • the left side of FIG. 4 is a photograph enlarged by 400 times, and the right-hand side is a photograph enlarged by 300 times.
  • a step of firing the Macsumsuk powders to have porosity may be further performed.
  • the suitable firing temperature is in the temperature range of 100°C to 300°C, and the firing removes moisture when powders are formed, uniformly increases the strength thereof, and thus helps uniform collapse of the granular form when an extruding step is performed.
  • annular powder shape can be maintained, and thus, a state in which the space inside the annular shape is filled with the plastic raw material in the injection process can be maintained. Therefore, excellent physical properties can be more effectively maintained.
  • a pellet-shaped plastic raw material is prepared, and mixed with the Macsumsuk powders to manufacture a pellet mixture.
  • a mixing ratio of the plastic raw material and the Macsumsuk powders can vary depending on the quality of the plastic raw material and physical properties of the plastic product to be injection molded.
  • linear low density polyethylene LLDPE
  • low density polyethylene LDPE
  • high density polyethylene HDPE
  • polypropylene PP
  • polystyrene PS
  • PET polyethylene terephthalate
  • PBT polybutylene terephthalate
  • PVC polyvinylchloride
  • SAN styrene acrylonitrile copolymer
  • ABS acrylonitrile butadiene styrene
  • Tritan ECOJEN
  • PETG PET
  • PCTG polyphenylsulfone
  • PPSU polyphenylsulfone
  • PC polycarbonate
  • non-degradable thermoplastic resins and some soft thermosetting resins can be used.
  • the mixing ratio with the Macsumsuk powders is preferably 20 to 70 weight% of the Macsumsuk powders with respect to the entire pellet mixture.
  • 2 to 13 weight% is preferable.
  • powders may be pulverized and mixed before the mixing with the plastic raw material.
  • the pellet mixture is stirred, and melting and extruding are performed in the condition of 180°C to 350°C.
  • the extruding step proceeds with a conventional melt extruder, but the temperature is limited to the above range.
  • the melted and extruded extrudate is cooled and cut to manufacture a masterbatch.
  • FIG. 5 shows an example of a masterbatch manufactured in the above processes.
  • the masterbatch manufactured as shown in the drawing exhibits a translucent dark brown color.
  • the manufactured masterbatch is mixed with the plastic product raw material in a certain ratio, and formed into a product by the method of extrusion, injection, blow, and the like.
  • the silver nanocomponents which is an antimicrobial substance is completely maintained in the Macsumsuk powder, Macsumsuk powders are evenly distributed in the plastic raw materials, the shape thereof is not easily collapsed, and a state of being evenly connected to the resin component can be maintained.
  • the far-infrared radiation effect and the water molecule activation effect can be exhibited based on properties specific to Macsumsuk (elvan, rare-earth element, Illite, mica, zeolite, bentonite).
  • the Macsumsuk raw material pulverized into 0.1 to 5 mm was loaded into a furnace, and the temperature and pressure were adjusted so that the temperature was caused to reach 1,200°C.
  • the pressure of the LPG gas (hereinafter referred to as "gas") in the furnace was adjusted by 0.1 kg/hr so that the temperature was caused to reach 300°C in one hour.
  • the gas pressure was adjusted by 0.125 kg/hr so that the temperature was caused to reach 500°C in one hour.
  • the gas pressure was adjusted by 0.15 kg/hr so that the temperature was caused to reach 700°C in one hour.
  • the gas pressure was adjusted by 0.2 kg/hr so that the temperature was caused to reach 850°C.
  • the temperature reached 850°C, in a state in which the gas pressure was fixed to 0.2 kg/hr, the temperature was maintained for about one hour for complete combustion of the organic substances contained in the raw materials.
  • the gas pressure was adjusted by 0.25 kg/hr, and the temperature was raised to 950°C in one hour.
  • the furnace was turned off, the exhaust port was closed, and the temperature was gradually lowered for extinguishment. Then, the temperature was caused to reach 800°C in five hours. When the temperature reached 800°C, the furnace was completely opened, and the temperature was cooled at 100°C per hour.
  • the obtained sintered body was first pulverized to 0.1 to 100 ⁇ m particles or less with a wet pulverizer.
  • the sintered particle pulverized to 0.1 to 100 ⁇ m or less was mixed with water in a weight ratio of 2:1, was introduced into the wet pulverizer to manufacture a liquid mixture which is finely pulverized to an average particle size of 0.1 to 100 ⁇ m or less, that is, a slurry.
  • Example 1 In order to increase the porosity of the final powders in the slurry manufactured in Example 1, a mixture of calcium carbonate and sodium carbonate in a weight ratio of 1:1 was added as a foaming agent to a weight ratio of 5 with respect to 100 parts by weight of the solid content of the slurry, and 1 part by weight of silver nanoparticles was added as the antibacterial substance, to manufacture a granulation mixture.
  • a burner of an air heating furnace is ignited as a spray drying method for granulation, the temperature was raised for two hours so that the temperature inside the furnace reached 1,000°C.
  • the blower is operated to move heat into the cyclone.
  • a nozzle was put in the lower portion of the cyclone, and the finely pulverized granulation mixture was pumped up at a pump pressure of 40 kgf/cm 2 to the upper point where the weight flowed.
  • the powders were caused to pass through sections set from 100°C to 300°C over 1 to 8 sections in one hour to remove residual moisture and foreign substances contained in the powders to manufacture the Macsumsuk powders.
  • Low-density polyethylene was prepared as the plastic raw material, mixing was performed such that the Macsumsuk powders was 30 weight% and LDPE was 70 weight%, and the mixture was introduced into a melt extruder.
  • the inside temperature of the furnace of the melt extruder was set to 180°C to 350°C, the plastic raw material was melted, and extrusion was performed while Macsumsuk powders are evenly dispersed in the plastic raw material. After the extrudate was cooled and cut to manufacture a masterbatch.
  • the LDPE plastic raw material is shown on the left, the Macsumsuk powder is shown in the middle, and the master batch is shown on the right.
  • the masterbatch manufactured in Example 3 was used as a raw material to manufacture a plastic container (Trade name: "Wellion Lock”) by commissioning to an injection company.
  • test results of testing the antibacterial activity of the antimicrobial plastics of the Macsumsuk powders and freshness is described. (The test was completed in Food Science Research Institute of Kyungil University on December 14, 2018, and the results were written in a test report.)
  • a certain amount of the pre-culture solution of the test strain at a certain concentration was inoculated into a container of a sample (Example 4). Then, the same sample was press-bonded thereto. Immediately after the press-bonding, the number of live cells was immediately checked (A). After 24 hours from the press-bonding, the number of live bacteria was checked (B).
  • salmonella typhimurium KCTC 1925
  • the measurement formula is as follows.
  • Rate of bacteria reduction % A ⁇ B / A ⁇ 100 (where A; the number of live cells immediately after inoculation, B; the number of live cells after 24 hours of culture).
  • Example 4 The container of Example 4 and three types of commercially available plastic containers which were purchased as comparative examples were used. Cherry tomatoes were purchased from the market, 200 g of cherry tomatoes were put in each container and stored in a 25°C thermostat, and microbiological qualities and acid values were measured on Days 3 and 7.
  • microbiological test items general bacteria, E. coli, mold, and pH were measured.
  • the suspension was continuously diluted 10 times by using sterile distilled water, general bacteria were inoculated into the aerobic account plate petrifilm (3M Microbiology, USA) and cultured at 35°C for 48 hours, an E. coli/coliform group was inoculated into the E.
  • CFU colony forming units
  • the pH was measured using a pH meter with the flesh destroyed.
  • the pH change according to the storage period gradually increased from the initial value of 4.4, but there was no change was observed depending on the containers.
  • the test results are shown in FIG. 7 .
  • Example 4 the freshness of the vegetables stored in the container manufactured in Example 4 was tested.
  • the masterbatch prepared according to the present invention can be applied to a plastic pack, a plastic container, a food collection container, a plastic pipe, a seafood packaging film, an agricultural product packaging film, a fruit packaging film, a food and beverage packaging film, an exhibition storage film, a dust mask, a water and sewage piping material, medical plastic device and instrument, an sanitary container, a humidifier material, a cutting board, an animal and vegetable product packaging material, medical drug storage plastic film and molding product, a construction material, a dish dryer plastic material, a table board, a bed board, a fish farm material, an aquarium material, a livestock product processing material, a filter for water purification, a guard, medical supplies, a bedding pillow, a sheet, an electric wire, a material for marine equipment (plastic material requiring resistance to seaweeds and microorganisms), a marine buoy, a net, a rope, a mat sheet, blankets, an agricultural and farming film, a thermoplastic and thermosetting plastic container, a flooring sheet, a

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
EP19900989.5A 2018-12-20 2019-04-25 Procédé de fabrication d'un mélange maître plastique antimicrobien en utilisant des granulés de macsumsuk Pending EP3885093A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020180166563A KR101975955B1 (ko) 2018-12-20 2018-12-20 맥섬석 과립 항균 플라스틱 마스터배치 제조 방법
PCT/KR2019/005008 WO2020130239A1 (fr) 2018-12-20 2019-04-25 Procédé de fabrication d'un mélange maître plastique antimicrobien en utilisant des granulés de macsumsuk

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EP3885093A1 true EP3885093A1 (fr) 2021-09-29
EP3885093A4 EP3885093A4 (fr) 2022-08-10

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CN111601692A (zh) 2020-08-28
KR101975955B1 (ko) 2019-05-08
JP7246108B2 (ja) 2023-03-27
CN111601692B (zh) 2022-06-24
JP2022514000A (ja) 2022-02-09
WO2020130239A1 (fr) 2020-06-25
PH12021551427A1 (en) 2021-12-06

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